Study of B → ψ(2S)K and B → ψ(2S)K ∗ (892) decays (CLEO Collaboration)
نویسندگان
چکیده
Color-suppressed decays of B mesons to final states with ψ(2S) mesons have been observed with the CLEO detector. The branching fractions for the decays B+ → ψ(2S)K+, B+ → ψ(2S)K∗(892)+, B0 → ψ(2S)K0, and B0 → ψ(2S)K∗(892)0 are measured to be (7.8±0.7±0.9)×10−4 , (9.2±1.9± 1.2)× 10−4, (5.0± 1.1± 0.6)× 10−4, and (7.6± 1.1± 1.0)× 10−4, respectively, where the first uncertainty is statistical and the second is systematic. The first measurement of the longitudinal polarization fraction is extracted from the angular analysis of the B → ψ(2S)K∗(892) candidates: ΓL/Γ = 0.45 ± 0.11 ± 0.04. Our measurements of the decays B0 → ψ(2S)K0 and B+ → ψ(2S)K∗(892)+ are first observations.
منابع مشابه
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